A non-invasive method of audio file identification is described to ascertain the proximity of processed audio, of possibly dubious origin, to a reference file. A differential correlation function forms the basis of a comparative metric. Testing embraces linear and non-linear processes including perceptual based codecs. Applications include DVD_A and SACD when used as the only legitimate non-watermarked release formats.

Author: Hawksford, Malcolm J.
Affiliation: Centre for Audio Research and Engineering, University of Essex, UK
AES Convention: 111 (November 2001) Paper Number: 5479
Publication Date: November 1, 2001
Subject: High Resolution Audio

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